I've noticed that some of the Voip adapters come with 110-220 volt AC power supplies. Great for international travel as promoted as a benefit on their web site. However, my VT1005 came with a 110vac only power supply and I would like to get one that works with 110 or 220 volts. I seem to be having problems explaining this to tech support, so it will be easier to simply go buy one. I know the basic requirements (12vdc, 1000ma output) but my question is: What size is the coaxial DC power plug for the Motorola VT1005? I didn't realize there were so many.